Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Kalshi vs Polymarket) Pick polygram.ink (preferred broker) |
100% | 0% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | View on Polymarket → |
Polymarket (direct) polymarket.com |
100% | 0% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | View on Polymarket → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | View on Polymarket → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | View on Polymarket → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | View on Polymarket → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| China Open, Qualification: Robin Montgomery vs Maria Aran Teixido Garcia | 100% |
| Completed Match | 100% |
| China Open, Qualification: Robin Montgomery vs Maria Aran Teixido Garcia Set 1 Winner | 100% |
| China Open, Qualification: Robin Montgomery vs Maria Aran Teixido Garcia Set 2 Winner | 100% |
| China Open, Qualification: Robin Montgomery vs Maria Aran Teixido Garcia Set 2 O/U 8.5 | 100% |
| China Open, Qualification: Robin Montgomery vs Maria Aran Teixido Garcia Set Handicap +/-1.5 | 100% |
| China Open, Qualification: Robin Montgomery vs Maria Aran Teixido Garcia Game Spread +/-7.5 | 100% |
| China Open, Qualification: Robin Montgomery vs Maria Aran Teixido Garcia Total Sets: O/U 2.5 | 0% |
| China Open, Qualification: Robin Montgomery vs Maria Aran Teixido Garcia Set 1 O/U 8.5 | 0% |
| China Open, Qualification: Robin Montgomery vs Maria Aran Teixido Garcia Set 1 O/U 9.5 | 0% |
| China Open, Qualification: Robin Montgomery vs Maria Aran Teixido Garcia Set 1 O/U 10.5 | 0% |
| China Open, Qualification: Robin Montgomery vs Maria Aran Teixido Garcia Set 2 O/U 9.5 | 0% |
| China Open, Qualification: Robin Montgomery vs Maria Aran Teixido Garcia Set 2 O/U 10.5 | 0% |
| China Open, Qualification: Robin Montgomery vs Maria Aran Teixido Garcia Match O/U 21.5 | 0% |
| China Open, Qualification: Robin Montgomery vs Maria Aran Teixido Garcia Match O/U 22.5 | 0% |
| China Open, Qualification: Robin Montgomery vs Maria Aran Teixido Garcia Match O/U 23.5 | 0% |
| China Open, Qualification: Robin Montgomery vs Maria Aran Teixido Garcia Set Handicap +/-1.5 | 0% |
Market context
Traders on decentralised prediction markets give 100% probability to china open, qualification: robin montgomery vs maria aran teixido garcia. This market refers to the tennis match between Robin Montgomery and Maria Aran Teixido Garcia in the China Open, Qualification, originally scheduled for September 28, 2026 at 3:30AM ET. This market w…
Methodology
Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). That keeps the comparison honest — a single canonical probability across the row, with the venue-by-venue trade-offs spelt out in the columns next to it.
Resolution & payout
Polymarket-based markets settle through the UMA Optimistic Oracle on Polygon. A proposer submits the outcome, a two-hour challenge window opens, and unchallenged proposals finalise the resolution. Payouts settle automatically in USDC the moment the result is final — no bookmaker, no delay.
Kalshi-based markets settle in USD via the CFTC-regulated clearinghouse. Betfair Exchange settles in GBP/EUR net of commission. Manifold is play-money and does not pay out real funds.
FAQ
- Where can I trade this market with the lowest fees?
- Polymarket is geo-blocked in the US/UK/EU. The easiest 0%-fee broker into the same order book is Kalshi vs Polymarket. Kalshi charges up to 7% per trade; Betfair Exchange takes 2-5% commission on net winnings.
- How does resolution work?
- Through the UMA Optimistic Oracle on Polygon: a proposer submits the outcome, a two-hour challenge window opens, and USDC payouts settle automatically once the result is final.
- What's the difference between YES and NO shares?
- A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.
- What does Polymarket cost to trade?
- Polymarket itself charges 0% — the only cost is the Polygon network fee, typically under $0.01 per transaction. Off-chain venues like Kalshi or Betfair charge 2-7% commission.
- How reliable are the quoted odds?
- The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.
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